Abstract
An inkjet printing method is described to fabricate hydrogen peroxide (H2O2) sensors. Insoluble Prussian blue (PB) nanoparticles were dispersed in aqueous solvent, and were printed on screen printed carbon electrodes with a piezoelectric inkjet printer for H2O2 detection. The electrochemical behavior of the printed sensors was studied by using cyclic voltammetry and chronoamperometry. The printed sensors showed great electrocatalytic activity toward H2O2 and can be used for amperometric detection of H2O2. The calibration curves for H2O2 determination showed a linear range from 0.02 to 0.7 mM with a sensitivity of 164.82 μA M−1 cm−2 for the printed PB film. The results showed the feasibility of applying inkjet printing technology on surface modification; the results also provide an alternative way for manufacturing electrochemical sensors.
